| Method |
Precise Learning Objective |
Linked |
Question / Activity
(Designed for maximum working out) |
Stepping Stones |
Pitstop Check
(Thinking Map) |
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Distance is how far an object moves. Distance does not involve direction.
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What is distance a measure of? |
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Speed does not involve direction. Speed is a scalar quantity. |
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Is speed a vector or a scalar quantity and why? |
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Distance is a scalar quantity. |
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Is distance a vector or scalar quantity and why? |
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The speed of a moving object is rarely constant. When people walk,
run or travel in a car their speed is constantly changing. |
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Is the speed of a moving object normally constant? |
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Displacement includes both the distance an object moves, measured in a straight line from the start point to the finish point and the direction of that straight line. |
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What is displacement a meaure of? |
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The speed at which a person can walk, run or cycle depends on many
factors including: age, terrain, fitness and distance travelled.
Typical values may be taken as:
walking ? 1.5 m/s
running ? 3 m/s
cycling ? 6 m/s.
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What are the typical speeds and factors that affect the speeds of people walking, running and cycling? |
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Displacement is a vector quantity. |
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Is displacement a vector or scalar quantity and why? |
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Students should be able to recall typical values of speed for a person
walking, running and cycling as well as the typical values of speed for
different types of transportation systems. |
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Students should be able to express a displacement in terms of both the
magnitude and direction. |
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It is not only moving objects that have varying speed. The speed of
sound and the speed of the wind also vary. |
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Is the speed of sound normally constant? |
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A typical value for the speed of sound in air is 330 m/s |
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What is the typical speed of sound in air? |
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Students should be able to make measurements of distance and time
and then calculate speeds of objects. |
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Demo:
Use data logger with trolley to investigate variables that affect speed of trolley (remember to lift the trolley when returning to the start position) |
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(MS) For an object moving at constant speed the distance travelled in a
specific time can be calculated using the equation:
distance travelled = speed ? time
s = v t
distance, s, in metres, m
speed, v, in metres per second, m/s
time, t, in seconds, s |
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What is the equation used to calculate the distance travelled and what are the units involved? |
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(MS) Students should be able to calculate average speed for non-uniform motion. |
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What is the equation used to calculate the average speed for non-uniform motion? |
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